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4 days ago · The basis of VirID is a comprehensive RNA-dependent RNA polymerase (RdRP) database to enhance a workflow that includes RNA virus discovery, phylogenetic analysis, and phylogeny-based virus characterization. Benchmark tests on a simulated data set demonstrated that VirID had high accuracy in profiling viruses and estimating viral richness.
9 hours ago · Anatomy and infection cycle of bacteriophage T4. A bacteriophage (/ bækˈtɪərioʊfeɪdʒ /), also known informally as a phage (/ ˈfeɪdʒ /), is a virus that infects and replicates within bacteria and archaea. The term was derived from "bacteria" and the Greek φαγεῖν (phagein), meaning "to devour".
4 days ago · 1. What is a Virus? Viruses are the smallest infectious agents, ranging from 20 nm to 400 nm in diameter. By comparison, the average size of a bacterial cell is 1 µm, hence 2-50 times bigger. Viruses are not cells: they are not capable of self-replication and are not considered “alive”.
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4 days ago · 3.3. Host Range. Avian influenza virus susceptibility and dispersal have been associated with a variety of factors such as bird host characteristics (e.g., host community species composition and host phylogenetic relatedness) [], ecological features (foraging methods, migratory behaviors and distance, breeding distribution) [], and environmental variables (e.g., land use, temperature, fecal pH, altitude, distance to water, habitat water salinity, and precipitation) [61 – 66].
2 days ago · Human endogenous retroviruses (HERVs) are widely recognized as the result of exogenous retroviruses infecting the ancestral germline, stabilizing integration and vertical transmission during human genetic evolution. To date, endogenous retroviruses (ERVs) appear to have been selected for human physiological functions with the loss of retrotransposable capabilities. ERV elements were previously regarded as junk DNA for a long time. Since then, the aberrant activation and expression of ERVs ...
4 days ago · Complementary genomic frameworks for taxonomic classification of viruses infecting bacteria and archaea reveal evolutionary drivers, mosaicism and perspective on the genetic diversity of the...
4 days ago · Activity levels determined weekly based on the percentage of visits to enrolled outpatient healthcare providers or emergency departments for fever and cough or sore throat reported to ILINet. Visits can be attributed to a variety of respiratory pathogens that cause these symptoms.
